>I write a small code snippet which defines two windows: WIN1 and WIN2.WIN1 is the parent of WIN2 and they share the same 'READ CYCLE' command.When this code snippet is running,I find that I cannot use mouse to click any oject on WIN1 and WIN2 except one pushbutton on WIN1.
>I wonder whether the child window cannot share the same 'READ CYCLE' command with the parent window.If this is the case,how can I make the parent window and the child window accept events concurrently?

I am not sure that this is what you are trying to do, but if you want to have two windows visible at the same time and to let the user work in both of them concurrently, it sounds like you want to create a screen set which contains both screens (windows). If you want to create this kind of thing at the code level, you could generate the SPR from the screen set and look at the resulting code as a guide to how the READ is handled in this situation.